📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!

    Question

    A takes 3 hours more while swimming upstream than

    downstream. His speed in still water is 12 km/hr. The speed of stream is 4 km/hr. What is the distance?
    A 37 km Correct Answer Incorrect Answer
    B 48 km Correct Answer Incorrect Answer
    C 45 km Correct Answer Incorrect Answer
    D 26 km Correct Answer Incorrect Answer
    E 42 km Correct Answer Incorrect Answer

    Solution

    Let A’s speed be x km/hr and current speed be y km/hr. Downstream speed = x + y = 12 + 4 = 16 km/hr Upstream speed = x – y = 12 – 4 = 8 km/hr Let time taken for downstream be ‘t’ hours. Here distance is same. => 16 × t = 8 × (t + 3) => t = 3 hrs Distance = 16 × 3 = 48 km

    Practice Next
    More Boats and streams Questions

    Relevant for Exams:

    ask-question